參數(shù)資料
型號: SAA7146A
廠商: NXP Semiconductors N.V.
英文描述: Multimedia bridge, high performance Scaler and PCI circuit SPCI
中文描述: 多媒體橋梁,高性能潔牙機和PCI電路SPCI
文件頁數(shù): 44/144頁
文件大小: 645K
代理商: SAA7146A
1998 Apr 09
44
Philips Semiconductors
Product specification
Multimedia bridge, high performance
Scaler and PCI circuit (SPCI)
SAA7146A
7.4.8
RPS
TIME OUT VALUE
These registers contain the values for the time out conditions of the PAUSE and CHECK_LATE commands for each task.
If the selected counter value is zero, the time out generation is disabled.
Table 36
RPS time out value
Table 37
RPS_TOX generation
OFFSET
(HEX)
NAME
BIT
TYPE
DESCRIPTION
D4
V_TO0
C_TO0
V_ABN0
31
30
29
RW
RW
RW
these two bits determine how the RPS_TO0 is generated;
see Table 37
this bit determines which port the V_sync for the time out check
comes from: a logic 1 selects Port A; a logic 0 selects Port B
reserved
this is a 4-bit value which sets the V_sync time out between
1 and 15 V_syncs
this value specifies after how many PCI clocks a time out
should be detected
these two bits determine how the RPS_TO1 is generated;
see Table 37
28
Vsync_Cnt0
27 to 24
RW
PCI_Cnt0
23 to 0
RW
D8
V_TO1
C_TO1
V_ABN1
31
30
29
RW
RW
RW
this bit determines which port the V_sync for the time out check
comes from: a logic 1 selects Port A; a logic 0 selects Port B
reserved
this is a 4-bit value which sets the V_sync time out between
1 and 15 V_syncs
this value specifies after how many PCI clocks a time out
should be detected
28
Vsync_Cnt1
27 to 24
RW
PCI_Cnt1
23 to 0
RW
V_TOX
C_TOX
RPS_TOX GENERATED FORMAT
0
0
1
1
0
1
0
1
no time out check
PCI clock time out check
V_sync time out check
both time out checks
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